1. Overview of STEP AP209 for multi disciplinary analysis interoperability and associated CAE Implementer Forum By Jean-Marc CREPEL, Associated CAE Expert, AFNeT
May 17 & 18, (Paris) – ‹1›

2. CAE-IF process and roadmap
Agenda
STEP AP209 overview
STEP AP209 ecosystem
CAE-IF process and roadmap
May 17 & 18, (Paris) – ‹2›

3. Why standards are needed ?
Benefits from the digital twin for :
Design process
Manufacturing
Plant layout
Maintenance
From the digital mockup to the digital twin :
More data
More info systems
More teams
Longer time for archiving
Need for interoperability through a format independent of the originating IT for…
Sharing data
Exchanging data
Retrieving data
Reusing data

4. STEP AP 209 : Multidisciplinary analysis and design
AP 209 is a ISO standard for sharing, exchange, retrieve and reuse of information between the iterative design and analysis stages of the product life cycle.
All AP 242 (Managed Model Based 3D Engineering) is a subset of AP 209
Functionalities covered today by AP 209 (ed2):
Product definition
Product structure and 3D shapes
Configuration control information
Material specifications & properties
CAE disciplines
Finite element data (linear statics and modes)
Computational Fluid Dynamics (based on CGNS Std.)
Kinematics analysis

5. STEP AP209 : CAD to CAE Shape Management
STEP AP209 supports the management of:
Nominal Design Shape (Original CAD Geometry)
Idealized Analysis Shape(s) (Processed CAD Geometry)
Analysis Shape(s) (FEA meshes)
STEP AP209 supports Product and Analysis Structures
Each with their own versions
Can be related to each other
All you want to know at :
Allows Analysis to revise
Independently of Design
Part
Analysis
Analysis Design
Version
Relationship
Assembly
Part
Version
Analysis
Version
Design
Documents
Analysis
Documents
Nominal
Design Shape
Idealized Analysis Shape
Analysis
Model Shape

6. CAE-IF process and roadmap
Agenda
STEP AP209 overview
STEP AP209 ecosystem
CAE-IF process and roadmap
May 17 & 18, (Paris) – ‹6›

7. LOTAR project “On A Page”
<Titel>
LOTAR project “On A Page”
LOTAR is an international consortium of Aerospace manufacturers
Prime objective is creation and deployment of the EN/NAS 9300 series standard for long-term archiving and retrieval of digital data, based on standardized approaches and solutions.
Seven LOTAR Working Groups at present
The objective of the LOTAR EAS Working Group is to develop, publish and maintain standards-based mechanisms for archiving and retrieval of Engineering Analysis and Simulation information that can be read and reused throughout the product lifecycle, independent of changes in the Information Technology (IT) application environment originally used for creation.

8. The “round-trip” of an EAS Archive to/from Long-term Storage
<Titel>
The “round-trip” of an EAS Archive to/from Long-term Storage
Archive
Source system
Retrieve and validate
Recovered FEA for review or reuse
Pass
Yes
Is the recovered FEA functionally equivalent to the original?
Original FEA
AP209 ed2 file
Metadata, input data & results
AP209 ed2
translator
The translator generates data to compare to validation properties during translation from STEP to native
Native FEA Data may be added to the archive
FEA Solver
Translated input data
New results from translated input data
Metadata, input data & results
AP209 ed2
translator
AP209 ed2 file
Translated results from original FEA
Equivalent outcome?
The translator generates validation properties during translation from native to STEP
Fail No
Ingest
Access
Storage Vault
Target system
Long Term Archival and Retrieval (LOTAR)

9. CAE-Implementor Forum “On A Page”
Joint testing forum hosted by PDES, Inc., prostep ivip, and AFNeT
Composed of CAD and CAE vendors as well as translation and validation software developers providing STEP translators
Closed group (sandbox) allowing implementors to develop and test new approaches in a trusted environment
Main goals :
Accelerate CAx translator development and ensure that users' requirements are satisfied
Implement functionality for today's needs and identify functionality for tomorrow's needs
Increase user confidence by providing system and interoperability testing
Avoid roadblocks by establishing agreed upon approaches
Ensure new functionality does not adversely impact existing implementations

10. Collaboration scheme Communication
Introduce new users, solution providers & industrial domains
LOTAR EAS standards
Education & Best practices on STEP AP209
Interoperability test rounds results
Requirements
Interoperability test rounds results
Interoperable solutions
Associations supporting LOTAR EAS WG and CAE-IF

11. AP209 related document typology
ISO standard
Recommended Practices
Handbook
Owner
ISO/TC 184/SC 4 Industrial data
CAE-IF
Objective
Provide information requirements and data model for AP209
Guide the implementation of AP209
Provide semantics to AP209 data model
Facilitate understanding of AP209
Accelerate implementation of the standard
Access
Public / to buy
CAE-IF members or
Public /free access
Tableau classification simplifié (AL)

12. NIST STEP File Analyzer and Viewer
Generates a spreadsheet or CSV file from a Part 21 file
Simplifies inspecting information at entity and attribute level
Viewer for CAD geometry (B-Rep and tessellated) with PMI
Viewer for AP209 Finite Element Models
Boundary Conditions
Loads
Results (e.g. Displacements)
More information and download at:

13. NIST STEP File Analyzer and Viewer : AP209 Unit Test Case

14. NIST STEP File Analyzer and Viewer : AP209 Example

15. STEP AP209 ecosystem
STEP AP209
ISO
CAE-IF
LOTAR
NIST
NAFEMS …

16. CAE-IF process and roadmap
Agenda
STEP AP209 overview
STEP AP209 ecosystem
CAE-IF process and roadmap
May 17 & 18, (Paris) – ‹16›

17. CAE-IF testing methodology
Workshop
Preparation based on:
Test suite selection
Test environment
Rec. Practise update
Preparation phase
3 months
Workshop
Translation based on:
Current EXPRESS / XML Schemas
Latest (draft) Recommended Practices
Test Case definitions
Translate to STEP
Checks performed (1/2):
Syntax and Structure (conformance to schema)
Semantics (conformance to Rec. Practices)
Perform STEP file checks and report findings
3 months
Checks performed (2/2):
Translation results consistancy (statistics, validation properties)
Participants access and process STEP files;
report results
Participants resolve issues during the test rounds
Detailed review at meeting
Workshop

18. CAE-IF trusted Test Environment
Global results statistics (publically available)
Detailed results comparison and analysis
(CAE-IF participants only)
ROG scale :
G: Successful exchange
O :Problem but may be usable
R: Exchange failed

19. CAE-IF roadmap Target Schedule Explore FEA functionalities
Process round trip
Process vehicle level models
Schedule
2 test rounds per year
1st test round started July, 17
Explore FEA functionalities
Explore model complexity
Explore FEA process
May 17 & 18, (Paris) – ‹19›

20. Complexity / Functionalities matrix
Simple Models
Advanced models
Vehicle level models
level 0
level 1
level 2
level 3
FEA inputs
Discretized geometry
Coordinate Systems
Model dimension / FEA analysis type
3D FEA analysis
2D axisymetric FEA analysis
2D plan stresses/strains FEA analysis
Nodes
Node sets
Elements & element properties
Elements 0D
Elements 1D
R1S, R2S
Elements 2D
Elements 3D
Element order
Linear
Quadratic
Cubic
Material data
Metallic Material data
Composite Material data
Applied loads and BC
Applied loads
Lumped (Nodal) forces & moments
Distributed linear forces (& moments)
Distributed surfacic forces (& moments)
Distributed volumic forces (& moments)
Other load conditions
Boundary conditions (BC)
fixed BC (=0)
R2S
imposed BC (.NE. 0)
FEA outputs
Primary results
Displacements /Rotation
Derivative results
Strain results
Stress results
Element internal forces
Other derivative outputs
BC constraint forces (vector)
Grid point force balance data
Meta data
Meta Data
High-Level Product Information
Units
Single function. tests
Mixed function. tests
Full
function.
test
Status
In progress
Considering
Targeted
May 17 & 18, (Paris) – ‹20›

21. Explore FEA process Input FEA data (native) CAESAR
Input native statistics
Input STEP
(native)
Input STEP
(native)
Input target statistics
Input STEP
(target)
Input STEP
(target)
CAE solver « A »
Done
Status
Delivered by CAE-IF participants

22. Explore FEA process Output FEA data (native) Input FEA data (native)
CAESAR
Input/ Output native statistics
Output STEP
(native)
Input STEP
(native)
Output STEP
(native)
Input STEP
(native)
Output target statistics
Output STEP
(target)
Input STEP
(target)
Output STEP
(target)
Input STEP
(target)
CAE solver « A »
In progress
Status
Delivered by CAE-IF participants

23. Explore FEA process Output FEA data (native) Input FEA data (native)
CAESAR
Input/ Output native statistics
Output STEP
(native)
Input STEP
(native)
Output STEP
(native)
Input STEP
(native)
Output target statistics
Input target statistics
Input STEP
(target)
Input STEP
(target)
Output STEP
(target)
Output FEA data
(rerun)
Input FEA data
(regenerate)
Output STEP
(target)
Output FEA data
(rerun)
Input FEA data
(regenerate)
Considering
Status
CAE solver « B »

24. As a summary Integrating STEP AP209 into the engineering process will
Enable exchange and archival of EAS data as well as CAD data
Store data independently from the originating IT system
Support capturing meta data and properties, and link between domains
The CAE Implementor Forum
Offer a trusted environment for AP 209 developers to test new approaches
Deliver test suites oriented to the user needs
Contribute to create documents and tools to support the implementation of the AP209 standard

25. Q & A session Yes, you can join us …
Contact : Jean-Marc CREPEL :
AFNeT website :
CAx-IF website :

26. Thank you
May 17 & 18, (Paris) – ‹26›

27. May 17 & 18, 2018 (Paris) – team@afnet. fr - http://standardizationday